Finding the Fourth Proportional to 320,436,353.70, 480,654,530.55 and 212,730,977.70
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Solution
The fourth proportional to 320,436,353.70, 480,654,530.55 and 212,730,977.70 is: 319,096,466.55
Step by Step Solution
- Step 1: Write the proportion equation
320,436,353.70 : 480,654,530.55 = 212,730,977.70 : x - Step 2: Convert to fraction form
320,436,353.70/480,654,530.55 = 212,730,977.70/x - Step 3: Cross multiply
320,436,353.70x = 480,654,530.55 × 212,730,977.70 - Step 4: Simplify right side
320,436,353.70x = 102,250,108,219,836,016 - Step 5: Solve for x
x = 102,250,108,219,836,016/320,436,353.70 - Step 6: Final answer
x = 319,096,466.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.